Improvement in lamps



R. S. MERRILL..

Lamp.

Patented Sept. 13.

/mla N. PETERS. PhelaLnhogmpmr. washington. D. C.

inttd tant @mili l @titille RUFUS S. MERRILL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO IIIMSELF. v

JOSHUA MERRILL, AND WILLIAM I. MERRILL, OF SAME PLACE.

Letters Patent No. 107,277, dated September 13, 1870.

IMPROVEMENT IN LAMPS.-

The Schedule referred to in these Letters Patent and making p art of the same To whom. it may concern Bc it known that I, RUFUs S. Mannino, of Boston, in the county of Suiolk aud-,State of Massachusetts, have invented certain new and useful Improvements in Lamps, of which the following is a speeilication.

iVIy invention relates to Argand or round-wick lamps in which the chimney-galleryand other removable parts of the burner are supported upon a short tube surrounding the wick-tube.

When this tube is fixed to ,the holly-of the lamp, as has been 'customary hitherto, the lamp cannot; be tilled with oil convenient-ly, except through an independent lling-oritice, formed off on one side of thelamptop and closed usually by a screw-cap after the oil is poured in.

This orifice, even in a metallic lamp, cannot be produced without some'troublc, but in glass lamps it would involve considerable diiculty and expense; and my object, therefore, is to construct. the lamp, whether metallic 'or glass, and the burner -in such niaunerthat the lamp 'may bc filled through the neck or central orifice, usually tormedvtherein for the passagecf the wick and draught-tubes of the burner.

'lo this end vI attach the supporting-tube to a screwcap which tits over and closes the nec-k of the lamp, and' combine these parts with the wick and draught-- tubes in such manner that, when the cap and tube v are removed, thelewill be an opening in the lamptop of sufcient dimensions to admit ot' the oil being poured through the same iuto'the lamp.y

The accompanying drawing represents the'inauner in which my invention is or maybe carried pinto efiect.

' Figure 1 is an elevation of a lamp made in accordf ance with myinvention. i

Figure 2 is a vertical central section of the salue, with the burner and the'screxv-cap and bunuel-supporting tube removed. l

Figure 3Y is a perspective'vie\v of the screw-cap and burner-supporting tube detached from the other port-ions of the lamp.

rlhe lamp-body is represented at A, carrying the central draught-tube a 'and wick-tube l1, arranged as is usual in Argand lamps.

These tubes pass up through vthe neck ci of the lamp, tlie orifice in which is ot considerably greater diameter than the tubes, so as to leave an annular space aronndsa'id tubes of suflicieut width to allow' .derstood by lamp manufacturers.

Both the cap and the supportiugtube{pass over and around the central tubes c b, and are secured yin place byscrewing the cap dowuintothe collar.

By lthis arrangement thefcap completely closes the lamp-body or reservoir A, and holds the supporting- 't-ub'e ih posit-ion to properly center and support the v burner; while, by unscrewing the cap, both it and the tube which it carries can be removed, so as to expose *the annular opening, through which the reservoir may be replenished with oil.

Having'now described my invention and the man- -ner in whichthe same is orinay be carried into et'- feet,

ent. is-

'lhe combination, with the lamp-bodyand the central draught and wick-tubes lot an Argand lamp, of the burner-supporting tube xed to a screw-cap, which closes the opening 'n1 the topvot` the lamp, substantiall y as and for the purpose shown and described.v

In testimony whereof I have signed my name 'to this specitication before two subscribing witnesses.

^ RUEUS S. MERRILL'. lVitnesses: y

" EDM. F. BROWN,

WM. H. McCann.

What I claim, anddesirc to-secure by Letters Iatl 

